Anyone painted glass
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Hi there, long time reader first time to post:
i have been trying to find the best method to backpaint glass.
I know there is a product called glassprimer , however i have seen that they are using automotive paint
in Australia to do this.the trick is around adhesion. I have heard of a product by dupont hz1503 glass surfacer (not available in Canada or the USA)
Has anyone tried this with automotive paint with any success?
I have heard tips like adding hardener to the basecoat or even spraying a clearcoat first then the basecoat
any thoughts?
thanks
Rick
I know a lot of people use one-shot striping enamel. Not sure about using auto paints on glass
You said “backpaint”,,,I guess you are talking about painting the backside or inside of the glass?
Can you paint the outside instead?
The reason why I ask,,,is that you can cover the glass with a good quality vinyl first and then paint that………Thanks for the replies
The project I have is to do a painted backsplash for a kitchen… …not automotive i know….
so you will be able to see through the glass
to the painted surface that is against the wall. the painted surface is then glued or 2 way taped to the wall…so the paint has to be stuck good to the glass …if this makes senseDing:Thanks
I have tried enamel paint however it tends to peel awayOld Dupont Guy: Thanks
The vinyl idea won’t work as the painted surface is seen through the glassAlthough I’m not sure how it would look from the opposite side. Perhaps use an abrasive blaster to etch the back side of the glass? Like they blast pictures into glass? And use that for mechanical adhesion?
If you have to maintain a sheer strength on it, I would choose to go with a Single Stage Urethane over a Basecoat/Clearcoat system. The base coat will be your weak point every time.
Single stage is more durable, and you don’t have to worry about clearing an area that isn’t even going to be visible. (Sounds like a waste of effort to me)One thing I do see is that they use *GP083 Glassprimer glass surface molecular activator”
Which looks like basically an adhesion promoter for glass, and according to the P-sheet, i can be used with most all Urethane coatings.
Sounds like basically all you need is a adhesion promoter for glass. And you can do whatever you want over that with Automotive Urethanes.
Sort of sounds similar to the adhesion promoter rags glass guys use around windshields to get a better bond to the glass with their Window Urethanes.
here is a pic of a back window on a 50 chevy truck i did. been a year and a half now and still looks good with no issues. this is basecoat but i do agree with the other guys that a single stage would be stronger. anyway, i did the etching on it, so what i did was etch the logo on the front side then on the back side where the color is i etched the whole thing so it was all frosted giving the paint something to hold onto. once i put the paint on the etching disappears making it just the color you painted it with. its kinda like when you sand clearcoat and dull it out then when you reclear, boom its clear again. to etch the glass i blasted it with a real fine media. if the paint has a good tooth and you use a single stage urethane it wont let go and release on you.
[IMG]http://i104.photobucket.com/albums/m192/xtremek6/DSCN6573-1.jpg[/IMG]
Thats pretty cool Jim. I can honestly say I have never thought about painting glass.
Can you still see through it somewhat or is it opaque?
Its completely opaque. The cab of the truck is white so i painted the glass teal first then the white cab color over it so from the outside it matches body color. This is an old icecream truck i restored.
I know you can sand glass. I’d bust out the DA and frost the whole thing and shoot the urethane SS. that paint is tough, and urethane sticks to everything.
[b]jim c wrote:[/b]
[quote]Its completely opaque. The cab of the truck is white so i painted the glass teal first then the white cab color over it so from the outside it matches body color. This is an old icecream truck i restored.[/quote]pics?? :exci
Thanks for the great constructive ideas for dealing with backpainted glass
I will experiment with the suggestions from sanding to using the straight single stage urethane
I looked at the GP083 and was wondering if that was just adhesion promotor
Thanks ratstang for reviewing the p sheet and also the suggesting that its similar to what the glass guys use
cool back window there Jim C
Thanks all for the thought put into the answers
Rick
It’s definitely not any type of adhesion promoter I’ve ever used.
The stuff is applied VIA a standard kitchen sprayer, and then instantly wiped away until squeaking sound is heard. :wak
I’m sure it is some type of acid or something that chemically etches the surface instantly.But one thing I’ll assure you, is I’ll bet every big paint manufacture out there has an adhesion promoter for glass. Just do a little research.
Although it isn’t anything I’ve ever done. Painting glass is fairly common nowadays.
Why don’t you just put a vinyl sign BEHIND the glass,,,,Do you have to use glass?
I would never think about painting a piece of glass for this application.
There are many different ways you can do this,,,,have you ever thought about Plexiglass?
It would be a lot easier to work with……………..ODG, Painted Glass Back splashes are VERY common. (Just google it, you’ll get a better idea of what he’s talking about.)
This is not an uncommon practice. And it’s done every day.The problem with the vinyl like he said, is he has to glue it to the backboard.
You won’t get any more adhesion to the glass with vinyl then you would anything else.
Which in comparison sort of makes it a waste of effort. (You wouldn’t glue a windshield to something via the vinyl decal, so why would you glue a vinyl decal to a wall to hold up a large piece of glass?)
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